16156533137 has 2 divisors, whose sum is σ = 16156533138. Its totient is φ = 16156533136.

The previous prime is 16156533121. The next prime is 16156533161. The reversal of 16156533137 is 73133565161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12018956161 + 4137576976 = 109631^2 + 64324^2 .

It is a cyclic number.

It is not a de Polignac number, because 16156533137 - 2⁴ = 16156533121 is a prime.

It is a super-2 number, since 2×16156533137² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16156533094 and 16156533103.

It is not a weakly prime, because it can be changed into another prime (16156533167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8078266568 + 8078266569.

It is an arithmetic number, because the mean of its divisors is an integer number (8078266569).

Almost surely, 2^16156533137 is an apocalyptic number.

It is an amenable number.

16156533137 is a deficient number, since it is larger than the sum of its proper divisors (1).

16156533137 is an equidigital number, since it uses as much as digits as its factorization.

16156533137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 41.

The spelling of 16156533137 in words is "sixteen billion, one hundred fifty-six million, five hundred thirty-three thousand, one hundred thirty-seven".